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Name
  V0488 Sge  
AAVSO UID
000-BQQ-565 (2686 observations)  
Constellation
Sagitta Sequence
J2000.0
19 45 06.49 +18 22 42.2  (296.27704 +18.37839) Search nearby
B1950.0 19 42 52.65 +18 15 23.2
Proper motion
RA: -2.272 +/- 0.427 mas/yDec: -6.473 +/- 0.392 mas/ySource: Gaia Collaboration, 2022
Galactic coord. 55.361 -2.993
Other names

(Internal only)
Gaia DR3 1824166210904571136 IGAPS J194506.48+182242.2 IPHAS J194506.48+182242.2
N Sge 2026 N Sge 26 Nova Sge 2026
PNV J19450648+1822422 PSO J194506.486+182242.199 UGPS J194506.49+182242.2
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Variability type
N
Spectral type --
Mag. range
6.9 - 21.3: V
Discoverer Gaia collaboration; Katie Barnhart, Kirill Sokolovsky, Darien Perla, Pragati Acharya, John Worley, Vallia Antoniou, Elias Aydi (NMW-TexasTech transient survey)
Epoch
25 Aug 2026 (HJD 2461278.4)
Outburst 2026
Period --
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto Nova outburst discovered by Katie Barnhart, Kirill Sokolovsky, Darien Perla, Pragati Acharya, John Worley, Vallia Antoniou, and Elias Aydi on August 25, 2026. Strong variability in quiescence between approx. 19.3 and 21.1 r according to ZTF, Gaia DR3, Pan-STARRS1 and IPHAS DR2 data. Eclipsing type with P= 9.9011 d in 2022yCat.1358....0G was spurious.
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References
Click reference title/citation to view in new window. Roll over index number to view submission details.
1 K. Barnhart; et al., 2026, ATel #18009 2026ATel18009....1B
2 K. Taguchi; A. Arai, 2026, ATel #18008 2026ATel18008....1T
3 Barnhart, K.; et al., 2026, CBET No. 5729 --
4 CBAT "Transient Object Followup Reports", 2026 --
5 Gaia collaboration; et al., 2022, Gaia Data Release 3 (Gaia DR3) Part 4
Variability		 2022yCat.1358....0G
6 Gaia collaboration; et al., 2022, Gaia Data Release 3 (Gaia DR3) Part 1
Main source		 2022yCat.1355....0G
7 Masci, F. J.; et al., 2019, The Zwicky Transient Facility: Data Processing,
Products, and Archive		 2019PASP..131a8003M
8 Chambers, K. C.; et al., 2016, The Pan-STARRS1 Surveys 2016arXiv161205560C
9 Barentsen, G.; et al., 2014, The second data release of the INT Photometric
Hα Survey of the Northern Galactic Plane (IPHAS DR2)		 2014MNRAS.444.3230B
External Links
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Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Size 5' x 5' (297 x 298 pixels)
Center 19 45 06.49 +18 22 42.2 (J2000)
Source STScI
Survey

Red, all sky, 1.0 arcsec/pixel
  Negative
Supporting Documents
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1 JD light curve Otero, Sebastian Alberto 2026-08-25 16:07 UTC Historical light curve with IPHAS DR2, Pan-STARRS1 DR2, ZTF DR24 and Gaia DR3 data.
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Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
4 Otero, Sebastian Alberto 2026-08-27 05:14 UTC Primary name from CBET No. 5729. Maximum magnitude and outburst peak epoch from AAVSO data.
3 Otero, Sebastian Alberto 2026-08-25 19:30 UTC Type from 2026ATel18009....1B. Primary name changed.
2 Otero, Sebastian Alberto 2026-08-25 16:07 UTC Minimum magnitude derived from IPHAS DR2 and Gaia DR3 data. Type from 2026ATel18008....1T.
1 Admin, VSX 2025-03-24 20:51 UTC Preserved original object data.

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